What is the resistance of an (an ideal) ohmmeter? An ideal voltage source doesn't have "resistance" per se, because it does not obey Ohm's law. But you can define its impedance, $Z=\Delta{}V/\Delta{}I$, which, like resistance, is measured in Ohms.

Perhaps a voltage source is mentioned, because we all know that an ideal voltage source should have zero internal resistance: a good one will have a small positive resistance, to which is added any wire resistance going to the load.

Suppose you want 10 V to produce a full-scale deflection of a voltmeter containing a 25-Ω galvanometer with a 50-μA sensitivity. Then 10 V applied to the meter must produce a current of 50 μA. The total resistance must be: (20.4.1) R t o t = R + r = V I = 10 V 50 μ A = 200 k Ω.

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The potential difference measured by voltmeter will be accurate if no current is drawn by voltmeter. Resistance of this voltmeter is infinite. An ammeter is used to measure the current in the circuit. An ammeter is connected in a series in the circuit. For ideal ammeters, there is zero resistance.

One word substitution of- An imaginary ideal society free of poverty and suffering. (A) Potable. (B) Regalia. (C) Sinecure. (D) Utopia. Subject: English Exam: AFCAT BANK CLERK BANK PO CDS CIVIL SERVICES NDA POLICE SI/ASI RAILWAY SSC SSC CGL UPSC. Be the first to upvote this question. Share This:

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Benzene and toluene form nearly ideal solutions. At 40°C, a solution composed of 1 mol benzene and 1 mol toluene has a vapor pressure of 110 mmHg. When 1 mol of benzene is added to the solution, the vapor pressure increases to 126.7 mmHg at the same temperature.

The change in entropy of the system moles of a diatomic ideal gas is heated from 400 K to 800 K under constant pressure: A. 3 R in 2 B. 7 R in 2 C. 5 R in 2 D. R in 2 class-11 thermodynamics Please log in or register to answer this question. 1 Answer 0 votes answered Jul 3, 2019 by UrmillaSahu (59.1k points) Correct Answer - B

The efficiency of an ideal heat engine working between the freezing point and boiling point of water is: 1. 26.8% 2. 20% 3. 6.25% 4. 12.5% Recommended MCQs - 118 Questions Thermodynamics Physics - XI Practice questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, NCERT Exemplar Questions and PDF Questions with answers, solutions.

Correct Answer - A After all stopcocks are opened, gases move unit partial pressure becomes same in all bulbs For O2 O 2 gas P 1V 1 = P 2V 2 P 1 V 1 = P 2 V 2 P 1 = 300 P 1 = 300 torr, P 2 P 2 ? V 1 = 1 V 1 = 1 litre, V 2 = 2.5 V 2 = 2.5 litre 300 × 1 = P 2 × 2.5 300 × 1 = P 2 × 2.5 P 2 = 120 P 2 = 120 torr For He gas